Vulnerability Description
The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a string beginning with a:1: followed by many {a:1: sequences.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | <= 5.3.0 |
Related Weaknesses (CWE)
References
- http://www.suspekt.org/2009/11/28/shocking-news-in-php-exploitation/
- http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf
- http://www.suspekt.org/2009/11/28/shocking-news-in-php-exploitation/
- http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf
FAQ
What is CVE-2009-4418?
CVE-2009-4418 is a vulnerability with a CVSS score of 5.0 (MEDIUM). The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a s...
How severe is CVE-2009-4418?
CVE-2009-4418 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-4418?
Check the references section above for vendor advisories and patch information. Affected products include: Php Php.